Definition of quartzite in English:
noun[mass noun] Geology
An extremely compact, hard, granular rock consisting essentially of quartz. It often occurs as silicified sandstone, as in sarsen stones.
- In addition to the volcanogenic sedimentary rocks, there are lenses of limestone, quartzite, shale and sandstone.
- The most resistant rocks are quartzite and quartz-rich sandstones, and tough fine-grained rocks such as slate.
- The envelope consists of garnet gneiss, migmatite, sillimanite gneiss, fibrolite schist, andalusite schist and quartzite, phyllite and unmetamorphosed Palaeozoic to Cretaceous sedimentary rocks.
Definition of quartzite in:
- US English dictionary
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